8276796: gc/TestSystemGC.java large pages subtest fails with ZGC

[shipilev]

ZGC would not start when it cannot allocate the heap with -XX:+UseLargePages. This makes the UseLargePages subtest fail on systems with (default) nr_hugepages = 0. It was exposed after JDK-8269077 moved that test config from G1-specific to generic one.

While fixing this bug, I decided to massage a test a bit: make it consistently choosing the configuration based on GC availability, doing UseLargePages tests only for GCs that fall back to non-large pages if not available, added test IDs. This basically goes the other way JDK-8269077 went: put in the GC-specific configs.

Additional testing:

• Linux x86_64 fastdebug, gc/TestSystemGC.java (runs all 5 configs)
• Linux x86_64 fastdebug, gc/TestSystemGC.java, TEST_VM_OPTS=-XX:+UseSerialGC (runs 1 config)
• Linux x86_64 fastdebug, gc/TestSystemGC.java, TEST_VM_OPTS=-XX:+UseParallelGC (runs 1 config)
• Linux x86_64 fastdebug, gc/TestSystemGC.java, TEST_VM_OPTS=-XX:+UseG1GC (runs 1 config)
• Linux x86_64 fastdebug, gc/TestSystemGC.java, TEST_VM_OPTS=-XX:+UseShenandoahGC (runs 1 config)
• Linux x86_64 fastdebug, gc/TestSystemGC.java, TEST_VM_OPTS=-XX:+UseZGC (runs 1 config)

---

Progress

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Issue

• JDK-8276796: gc/TestSystemGC.java large pages subtest fails with ZGC

Reviewers

• Per Liden (@pliden - Reviewer) ⚠️ Review applies to 1517089
• Stefan Karlsson (@stefank - Reviewer) ⚠️ Review applies to 1517089

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[mlbridge]

Webrevs

• 02: Full - Incremental (21728b94)
• 01: Full - Incremental (15170896)
• 00: Full (1edc74c1)

[pliden]

Looks good.

[openjdk]

@shipilev This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8276796: gc/TestSystemGC.java large pages subtest fails with ZGC

Reviewed-by: pliden, stefank

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At the time when this comment was updated there had been 2 new commits pushed to the master branch:

• a0b8445: 8276846: JDK-8273416 is incomplete for UseSSE=1
• a3f710e: 8276215: Intrinsics matchers should handle native method flags better

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[stefank]

Looks like a sensible fix.

[shipilev]

Thanks for reviews. I'll do another merge to pick up Windows x86_64 GHA fixes to make sure this still works properly on Windows, and then push.

[shipilev]

GHA tests are green.

/integrate

[openjdk]

Going to push as commit 91bb0d6.
Since your change was applied there have been 17 commits pushed to the master branch:

• 08e0fd6: 8276835: G1: make G1EvacFailureObjectsSet::record inline
• ad3be04: 8276536: Update TimeZoneNames files to follow the changes made by JDK-8275766
• e27a67a: 8276930: Update ProblemList
• 73e6d7d: 8276801: gc/stress/CriticalNativeStress.java fails intermittently with Shenandoah
• bce35ac: 8276775: ZonedDateTime/OffsetDateTime.toString return invalid ISO-8601 for years <= 1893
• 0c409ca: 8276186: Require getAvailableLocales() methods to include Locale.ROOT
• df02daa: 8269986: Remove +3 from Symbol::identity_hash()
• 2374abd: 8276678: Malformed Javadoc inline tags in JDK source in com/sun/beans/decoder/DocumentHandler.java
• 67c2714: 8276889: Improve compatibility discussion in instanceKlass.cpp
• a5c160c: 8267108: Alternate Subject.getSubject and doAs APIs that do not depend on Security Manager APIs
• ... and 7 more: https://git.openjdk.java.net/jdk/compare/0f463a7bf73791eda9404882ff63daf9040399bb...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 91bb0d6.

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